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Summer Clouds

09/06/2017 at 09:11
Answers
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The solid in the picture is created from two cubes with edges 1 cm long is placed on the top of a bigger cube with edges 10 cm long. What is the surface area of the solid?
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A) \(56cm^2\)
B) \(58cm^2\)
C) \(59cm^2\)
D) \(60cm^2\)



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    Đồ Nhà Quê 12/06/2017 at 14:06

    The cubic volume is large :

     10 . 10 . 10 = 1000 ( cm3 )

    Cubic cubic volume is:

     1 . 1 . 1 = 1 ( cm3 )

    Dress :

     1000 : 1 = 1000 ( cube cubes )

                                 Đáp số : 1000

     
  • ...
    Doraeiga 10/06/2017 at 11:27

    The cubic volume is large :

     10 . 10 . 10 = 1000 ( cm3 )

    Cubic cubic volume is:

     1 . 1 . 1 = 1 ( cm3 )

    Dress :

     1000 : 1 = 1000 ( cube cubes )

                                 Đáp số : . . .

    What's wrong, sorry!!! bucminh

  • ...
    Cherry 10/06/2017 at 21:43

    The surface area of bigger cube is:
    \(4\times10\times10=400\left(cm^2\right)\)
    The surface area of small cube is:
    \(4\times1\times1=4\left(cm^2\right)\)
    The area of a face of small cube is:
    \(1\times1=1\left(cm^2\right)\)
    Because the surface area of the soild is calculate more twice times the area of a face of small cube. So the surface area of the soild is:
    \(400+4-1\times2=402\left(cm^2\right)\).



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